Laying-out attachment for mortising-machines



(No Model.) 3 SheetsSheet 1 A H. M. BULLIS.

LAYING OUT ATTACHMENT FOR MORTISING MACHINES.

IINVENTOR:

Patented Dec. 13, 1887.

ATTORNEYS.

N, PETERS. Phoivlilhographer, Wahingtnn. o. c.

(No Model.) 'asneets-snet 2. H. M. BULLIS.

LAYING OUT ATTACHMENT FOR MORTISING MACHINES. No. 374,730. Patented Dec.13,1887.

YYITNESH INVENTORY:

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' ATTORNEYS;

N. PETERS. Halo-Lithograph". Washington, D.C

'(N'o Modem H. M. B LLIs.

LAYING OUT ATTACHMENT FOR MO RTISING MACHINES. I Np. 374,730. Patented1m. 13, 1887.

1 nun| I INVBNTOR i 7W1. 20m,

' v BY MAM w M ATTORNEYS;

I WITNESSES:

3 Sheets-Sheet 3.

UNITED STATES PATE T OFFIC HENRY M. BULLIS, OF TRAVERSE CITY, MICHIGAN.

LAYING-OUT ATTACHMENT FOR MORTISING-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 374,730, datedDecember 13, 1887.

Application filed June 24, 1887. Serial No. 242,384. (No model.)

To a'll whom it may concern:

Be it known that I, HENRY M. BULLIS, of Traverse City, in the county ofGrand Traverse and State of Michigan, have invented a new and ImprovedLaying-Out Attachment for Mortising-liiachines, of which the followingis a full, clear, and exact description.

' The object of my invention is to provide a new and improved attachmentfor mortisingmachines by which the mortise can be accurately formed ateach end of a piece of wood.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter,and then pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a side elevation of my improvement shown in connection withthe parts of a mortising-machine. Fig. 2 is a plan view of thesame,parts of the mortising-machine being in section. Fig; 3 is alongitudinal sectional elevation looking from the rear. Fig. 4. is aplan view of the stationary bed. Fig. 5 is a side elevation of the rulefor measuring the stroke. Fig. 6 is an enlarged cross-sectionalelevation of my improvement on theline x w of Fig. 2. Fig. 7 is anenlarged end elevation of a sliding block for supporting a rest. Fig. 8is a side elevation of the same. Fig. 9 is a side elevation of one endof the rest for the sliding block illustrated in Figs. 7 and 8; andFigs. 10 and 11 are detail plan views, partly in section and on a largerscale.

My improvement is held on the top of the table A of a mortising-machineof any approved construction. The bed B of my improvement is fastened bybolts or other means to said table A, and is provided near its ends andin the middle with the rollers O, which are mounted in suitable bearingsin the sides of the bed B and extend with their tops slightly beyond theupper edge of the bed B, and support the sliding carriage D on theguides E, each of which is provided in its middle with alongitudinally-extending dovetail, E, fitting into a correspondinggroove formed in the transverse partitions B and the end walls, B, ofthe bed B.

the inner ends of the dovetailed strips L, sliding in the dovetailgroove I-I, extending the length of the carriage D at the rear, as shownin Figs. 2 and 6. The inner end of the dovetailed strip L, which isconnected to the block G, is reduced-that is, it does not project be-'yond the groove in the rear of the'oarriage.

. The blocks G and Gare connected with each other by a screw-rod, I,having right and left hand threads and a collar, 1, in its middle, whichcollar passes between the flanges of the lug H, secured to the carriageD,so.that when the screw-rod I is turned by a key or other means theblocks G and G" slide-toward or from the lug H, which prevents thecollar 1 from moving endwise.

On the block G is secured one end of a rule, J (see Fig. 5,) extendingto and beyond the other block, G, and serving to indicate the length ofthe stroke of the carriage D-that is, the length of the mortise to bemade. When the blocks G and G are adjusted to the stroke requiredthatis, to the length of the mortise'tobe madethen the blocksG and G aresecured to the carriage D by the screws H", passing trans verselythrough the carriage D and pressing against the inner faces of saidblocks G and G, as shown in Fig. 2. On the rear of the bed B is secureda lug, K, which projects upward between the blocks Gand G, so that onthe forward and backward motion of the carriage D said blocks G and Gstrike alternately against the lug K. thus limiting the forward andbackward stroke of the carriage D, which stroke is equal to the lengthof the mortise to be made, and the stroke is regulated by adjusting thescrew-rod I, as above described.

In the groove H in the rear of the carriage D are adj ustably held thedovetailed graduated strips L, each extending from the end of thecarriage inward and fastened to the blocks G G, as hereinbeforedescribed, and on each strip L is-held to slide a block, N, on which isfastened the rest O,held on the top of the carriage' D. Each slidingblock N is secured, after it is adjusted on its respective graduatedstrip L, by a bolt, N, by screwing the bolt N with its lower pointed endagainst the upper inclined edge of the dovetailed strip L, as indicatedin dotted lines in Fig. 6.

On each side of the handle F on the front face of the carriage D issecured a dovetailed graduated strip, P, extending longitudinally fromsaid handle F toward the end and serving to carry an L-shaped block, Q,held adjustably on said strip P by a set-screw, Q. The upper arm of theblock Q rests on the top of the carriage D and carries a vertical pin,R, on which is held to swing, whenever desired, a. wooden beam,S.(Clearly shown in Figs. 9,10, and 11 and in dotted lines in Fig. 2.)Said wooden beamS is adapted to rest with its free end on the same .endof the stile to be mortised, and is swung forward when the opposite beamS is used. K

The operation is as follows: The bed B is secured to the table A in sucha manner that its rear rests closely on vertical guide A, extendingupward from the rear of the table A. The stile or other piece of wood tobe mortised is placed on top of the carriage D, abutting with its outerend against the rest 0, and its rear being placed against the face ofthe guide A. The inner end of the stile or beam to be mortised isdirectly under the mortising tool T of the mortising-machine, and therest 0 is set so that when the attachment is in the position shown inFig. I then the mortisingtool T is at the extreme outer end of themortise to-be formed in the stile. The block G in this position of theattachment restsagainst the lug K of the stationary bed B. The blocks Gand G are set according to the length of the mortise to be made by thescrew-rod I, and the length of the mortise is indicated by the rule J.The mortising-machine is now set in motion, so that the mortising-tool Toperates on the stile or wooden beam in the usual manner. The operatorat the same time takes hold of the handle F and moves the carriage D inthe direction of the arrow 0. until the block G strikes against thelugK, and the tool T is now at the inner end of the mortise to be formed.The carriage D is then moved in the inverse direction of the arrow atuntil the other block, G, strikes against the lug K, and theabove-described operation is then again repeated, whereby the tool Tforms the mortise in the stile or wooden beam. When one end of the stileis mortised, then the operator slides the stile toward the other end ofthe carriage D until the same end abuts against the rest S on the sameside of the attachment. The other end of the stile is now mortised inthe manner above described. Each operation makes a mortise half throughthe timber. Then the work is turned end over and the stops on theopposite side of the attachment are used.

Having thus fully described my invention, I claim as new and desire tosecure by-Letters Patent 1. In alaying-out attachment formortisingmachines, the combination, with a stationary bed provided withan upwardly-projecting lug, of a carriage traveling on the said bed andprovided with a longitudinal groove, graduated strips in said groove,and blocks secured to the strips and adjustably connected together,substantially as described.

2. In a layingout attachment for mortisingmachines, the combination,with a stationary .bed provided with an upwardly-projecting lug, of acarriage sliding on the bed, graduated strips held to the carriage,blocks secured to the said strips and adjustably connected together, andrests adj ustably secured to the said strips, substantially asdescribed.

3. In a laying-out attachment for mortisingmachines, thecombination,with a bed secured to the table of the mortisingmachine,rollers held on said bed, and a lug secured to the rear of said bed, ofa carriage traveling on said rollers, gage-strips held adjustable onsaid carriage, and blocks held on said gage'strips and engagingalternately said lug on the bed, substantially as shown and described.

4. In a laying-out attachment for mortisingmachines, the combination,with a bed secured to the table of the mortising-machine, rollers heldon said bed, and a lug secured to the rear of said bed, of a carriagetraveling on said rollers, graduated dovetailed gage-strips L, held adjustably on rear of said carriage, blocks held on said gage-strip andengaging alternately said lug on the bed, and rests mounted adjustablyon said carriage, substantially as shown and described.

5. In a laying-out attachment for mortisingmachines, the combination,with a sliding carriage, of blocks adapted to slide on said carriage, ascrew-rod connecting said blocks to each other, and a rule secured by'one end to one of said blocks, its other end extending to and beyondsaid other block to indicate the stroke of the carriage, substantiallyas shown and described.

6. In a laying-out attachment for mortisingmachines, the combination,with a carriage provided on the rear, near each end, with a graduateddovetailed strip, of an L-shaped block held adj ustably on saiddovetailed strip and a rest mounted on said block, substantially asshown and described.

7. In a laying-out attachment for mortisingmachines, the fixed bed B,secured to the table of the mortising-machine, the rollers G, mounted onsaid bed B, and the lug K, held on the rear of said bed B, incombination with the carriage D, traveling on said rollers C andprovided with the dovetail E, engaging a corresponding groove in the endwalls, B, and the partitions B of said bed, the handle F, attached tothe front of said carriage D, for moving said carriage forward andbackward,

374,730 r it and .the adjustable blocks G and G, secured to the carriageD and striking alternately against said lug K, substantially as shownand described. y

8. In a laying-out attachment for mortisingmachines, the bed B, therollers O, mounted in said bed, and the lug K, held on the rear of saidbed, in combination with the carriage D, the blocks G and G, heldadjustably on said carriage D, and the screw-rod I, for adjusting saidblocks G and G, substantially as shown and described".

9. In a laying-out attachment for mortisingmachines, the bed B, therollers O, mounted in said bed, and the lug K, held on the rear of saidbed, in combination with the carriage D, the blocks G and G, heldadjustably on said carriage D, the screw-rod I, for adjusting saidblocks G and G, and the rule J, se-

cured by one end to said block G and extend- 20' ing over to and beyondthe other block,'G, and adapted to indicate the stroke of the carriageD,substantially as shown and described.

10. In a laying-out attachment for mortising-machines, the carriage D,the graduated dovetailed strips P, and the adjustable rests 0, held onsaid carriage D, in combination with the blocks Q, heldadjustably'in'said graduated strips P, and the beam S, pivotallyconnected with said block Q, substantially as 0 shown and described.

HENRY Bonus.

Witnesses:

Tnos. G. SHILsoN, EPHRAIM E. TIFFANY.

